什么是(默认的)字符集:
MySQL数据库 MySQL表 MySQL列
什么是(默认的)字符集:
MySQL数据库 MySQL表 MySQL列
当前回答
要查看数据库的默认排序规则:
USE db_name;
SELECT @@character_set_database, @@collation_database;
要查看表格的排序:
SHOW TABLE STATUS where name like 'table_name';
要查看列的排序规则:
SHOW FULL COLUMNS FROM table_name;
查看表的默认字符集
SHOW CREATE TABLE table_name;
其他回答
要查看数据库的默认排序规则:
USE db_name;
SELECT @@character_set_database, @@collation_database;
要查看表格的排序:
SHOW TABLE STATUS where name like 'table_name';
要查看列的排序规则:
SHOW FULL COLUMNS FROM table_name;
查看表的默认字符集
SHOW CREATE TABLE table_name;
我是这么做的——
对于模式(或数据库-它们是同义词):
SELECT default_character_set_name FROM information_schema.SCHEMATA
WHERE schema_name = "schemaname";
表:
SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
AND T.table_schema = "schemaname"
AND T.table_name = "tablename";
列:
SELECT character_set_name FROM information_schema.`COLUMNS`
WHERE table_schema = "schemaname"
AND table_name = "tablename"
AND column_name = "columnname";
数据库: 使用db_name;选择@@character_set_database;
正如前面所写的,SHOW FULL COLUMNS应该是获取列信息的首选方法。 缺少的是在不直接到达元数据表的情况下获取字符集的方法:
SHOW FULL COLUMNS FROM my_table WHERE Field = 'my_field'
SHOW COLLATION WHERE Collation = 'collation_you_got'
显示像'character_set_%'或'collation%'这样的变量